Home / 42,467.76-63,701.64-12,885.75

Finding the Fourth Proportional to 42,467.76, 63,701.64 and 12,885.75

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Solution

The fourth proportional to 42,467.76, 63,701.64 and 12,885.75 is: 19,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,467.76 : 63,701.64 = 12,885.75 : x
  2. Step 2: Convert to fraction form
    42,467.76/63,701.64 = 12,885.75/x
  3. Step 3: Cross multiply
    42,467.76x = 63,701.64 × 12,885.75
  4. Step 4: Simplify right side
    42,467.76x = 820,843,407.63
  5. Step 5: Solve for x
    x = 820,843,407.63/42,467.76
  6. Step 6: Final answer
    x = 19,328.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.